Firewall requires _ and _ to implement
Router or other communication device
Firewall
Program that screens all incoming traffic
Firewall
Protection a local system or network
Firewall
Firewall objectives
General firewall feature
PPNAA
Additional features
DAC
Use one or both methods
Packet filtering
Proxy service
It protects from
RISSSRES
Equip each workstation
Intrusion protection
Firewall is inserted between
Private network and internet
Can be a single computer
Techniques that firewall use
SDUB
Type of internet service that can be accessed
SC
Determines the direction
Direction control
Controls access to a service
User control
How particular services are used
Behavior control
Types of firewalls
PAC
Set of rules to each incoming İP packet
Packet filtering router
Information contained in a network packet
SDSII
Originated the IP packet
SIPAD
IP packet is trying to reach
Destination İP address
The transport level
Source and destination protocol address
Defines the transport protocol
IP protocol field
